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Cosmetic ingredient (INCI)

Polyurethane-18

Used in cosmetic products as binding and hair fixing. Polyurethane-18 is a complex polymer formed by the reaction of m-tetramethylene diisocyanate, polybutylene glycol and Dimethylolpropionic Acid (q.v.) The pre-polymer is neutralized with Triethylamine and condensed with a combination of hydrazine and C1-8 diamines to achieve chain extension.

Listed in several EU annexes
  • Prohibited in EU cosmetics, Annex II/201
  • Allowed with restrictions, Annex III/62

Annex III/62: (a) 2.5%

The chemical behind this ingredient

Structure, properties, safety data and price information live on the chemical page.

This ingredient is not linked to a single chemical in our database, which is common for blends, extracts and polymers. Post a buy request with the INCI name and suppliers will quote.

Frequently asked questions

What is Polyurethane-18 used for in cosmetics?

Polyurethane-18 is used in cosmetic products as binding and hair fixing. Polyurethane-18 is a complex polymer formed by the reaction of m-tetramethylene diisocyanate, polybutylene glycol and Dimethylolpropionic Acid (q.v.) The pre-polymer is neutralized with Triethylamine and condensed with a combination of hydrazine and C1-8 diamines to achieve chain extension.

Is Polyurethane-18 restricted in cosmetics in the EU?

Polyurethane-18 is listed in the annexes of EU Cosmetics Regulation (EC) No 1223/2009: Annex II/201 (prohibited in eu cosmetics), Annex III/62 (allowed with restrictions). Annex III/62: (a) 2.5% Always check the full annex entry for the conditions of use.